BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 07.03.1875
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 03.05.1875
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 16.05.1877
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 02.07.1877
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 21.08.1877
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 15.11.1878
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 12.12.1878
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 04.10.1877
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 17.02.1885
BRIEF [O.A.] Stern, Maximilian L. Author: Stern, Maximilian L. Recipient: Haeckel, Ernst Dating: 06.01.1893